Handlescout - Get notified when a Twitter username becomes available
Instant Username Search - Check out if your username is available
Handle Horse - Monitor when your desired Twitter handle becomes available
Namewink - Get brand name ideas and domain name suggestions for your startup, business, company or side-project.
1KDomains - 🌟 Buy and Sell Domains at 1kdomains.co 🤯 Buy & Sell Domains using Crypto too.
UserHunt - Hunt down accounts by username across social networks